The DADS1298 are a family of multi-channel, synchronous sampling 24-bit delta - sigma analog-to-digital converters (ADCs) with integrated programmable gain amplifiers (PGA), internal references,  and onboard oscillators. 

The DADS129x includes all the functionality typically required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications where these values must be kept to a minimum. With its high integration and excellent performance, the DADS129x enables the development of scalable medical instrument systems in a significantly reduced size, with significantly lower power consumption and overall cost.

Each channel of the DADS129x features a flexible input multiplexer (mux) that can be independently connected to internally generated signals for testing, temperature, and lead disconnection detection. Additionally, any configuration of the input channel can be selected to generate a right leg drive (RLD) output signal.

The DADS129x operates at a data rate of up to 32kSPS, enabling software pacing detection. Lead disconnection detection can be achieved internally via pull-up/pull-down resistors or an excitation current trap/current source. Three integrated amplifiers generate the Wilson center termination (WCT) and Goldberg center termination (GCT) required for a standard 12-lead ECG. Multiple DADS129x devices can be daisy-chained in high-channel-count systems.

The package option is TQFP-64.
The DADS129x TQFP has an industrial-grade rated temperature range of -40°C to +85°C.

• Eight low-noise programmable gain amplifiers (PGAs) and eight high-resolution analog-to-digital converters (ADCs).
• Sampling rate: 250SPS to 32kSPS.
• Low power consumption: 0.75mW per channel.
• Full-temperature range input bias current: 1.5nA.
• Common-mode rejection ratio (CMRR): -118dB.
• Programmable gain: 1, 2, 3, 4, 6, 8, 12.
• Supports systems that meet AAMI EC11, EC13, ICE60601-1, IEC60601-2-27 and IEC60601-2-51 standards.
• SPI™ compatible serial port.
• Built-in right leg drive amplifier, lead disconnection detection, Wilson central terminal, pacing detection, test signal.
• Digital pacing detection function.
• Built-in oscillator and reference.
• Single-pole or bipolar power supply:

• Medical instruments (electrocardiogram (ECG), electromyography (EMG), and electroencephalography (EEG)).
• Patient monitoring: Holter monitoring, time, stress, and vital signs, including ECG, AED, telemedicine, and sleep monitoring.
• Sound effects/dynamic strain gauges.
• Pressure sensor.